<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>简单收缩搜索框</title>
    <link rel="stylesheet" href="./index.css">
</head>

<body>
    <form action="" method="" name="" id="fom">
        <div class="search_box" id="ser_box">
            <input type="search" value="" class="search_bar">
            <button type="submit" class="search_btn">
                <div class="circle"></div>
                <div class="bar"></div>
            </button>
        </div>
    </form>
    <script src="./index.js"></script>
</body>

</html>